Ten seeded players were in action during the Cincinnati Open quarterfinals Aug. 15. Here's how the action unfolded in Mason.

(Reuters) -World number one Aryna Sabalenka kept her Cincinnati Open title defence alive by claiming a 7-6(3) 4-6 7-6(5) victory over Emma Raducanu in a marathon third-round clash on Monday, while Taylor Fritz advanced with a straight-sets win over Lorenzo Sonego.

Sabalenka came from a break down in both sets to beat Raducanu 7-6 (6) 6-4 at the All England Club last month, saving a barrage of set points in the opener. So when the Cincinnati draw was made, everyone circled their potential round three rematch - and it delivered.

World No. 1 and defending Cincinnati Open champion Aryna Sabalenka beat Emma Raducanu in one of the longest matches in tournament history Aug. 11.